For hydrogen atom, the orbital/s with lowest energy is/are : (A) $4s$ (B) $3p_x$ (C) $3d_{x^2-y^2}$ (D) $3d_{z^2}$ (E) $4p_z$ Choose the correct answer from the options given below :

Question

Dr. Abubacker · Accepted Answer

[Solution by Dr. Abubacker] In a one-electron atom the energy depends only on $n$ ($E_n\propto-\frac1{n^2}$). The orbitals with the lowest $n$ are $3p_x$, $3d_{x^2-y^2}$ and $3d_{z^2}$ ($n=3$), which lie below $4s$ and $4p_z$ ($n=4$). Answer (1).

Q. For hydrogen atom, the orbital/s with lowest energy is/are : (A) $4s$ (B) $3p_x$ (C) $3d_{x^2-y^2}$ (D) $3d_{z^2}$ (E) $4p_z$ Choose the correct answer from the options given below :

Explanation

Reviewed by Dr. Abubacker

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